They have already proven they can get over 80% of the lithium out of the clays. This has been shown in the labs on 3 differents holes. They are also able to separate the lithium from other contaminates to ready for battery grade.
If you can refine the ore on a bench in a lab on a small scale you certainly can do so at a larger scale on site.
They will crush the clays, put then on a conveyor belt to a shaker vat and run the acid through several times. Then move the slurry to the next vat in the process. There could be 5 or 6 vats taking the lithium slurry to the end process.